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प्रश्न
Tick the most appropriate answer.
Physical changes are
पर्याय
permanent
periodic
temporary
irreversible
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उत्तर
temporary
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संबंधित प्रश्न
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
Write true or false
Melting of ice is a physical change.
Name two reversible changes.
Give two examples of periodic changes.
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical change.
State which of the following pertain to – chemical changes.
- Substance retains its identity.
- The change is permanent.
- No new substance is formed.
- Is easily reversible.
- Produces one or more new substances by a change in its composition.
- The change is temporary.
- The composition and properties of the original substance are not altered.
State which of the following terms connected with change of state of matter i.e.
(a) Melting
(b) Vaporisation
(c) Condensation
(d) Freezing
pertain to –
- Conversion of a liquid into a vapour or gas.
- Conversion of a liquid into a solid.
- Conversion of a solid into a liquid on heating.
Filling up a balloon with hot air is a _______ change.
A physical change is generally____________.
Iron pipes coated with zinc do not get rusted easily.
